[%c_effect h3;square;h3;type;Interesting;persistent;true][%c_arrow f6g4;keyPressed;none;from;f6;opacity;0.8;to;g4;persistent;false,c1e3;keyPressed;none;from;c1;opacity;0.8;to;e3;persistent;false] The idea of this move is to play Be3 without having to worry about Ng4.
5... c5d4  6. f3d4  6... g8f6  7. b1c3 [%c_highlight b5;keyPressed;none;opacity;0.8;square;b5;persistent;false,e2;keyPressed;none;opacity;0.8;square;e2;persistent;false] 7... g7g6 A normal position of the Maroczy pawn structure, with the difference that the bishop is on b5 and not on its usual (and better) square on e2.